<i>N</i>-Acyl-5,5-Dimethylhydantoins: Mild Acyl-Transfer Reagents for the Synthesis of Ketones Using Pd–PEPPSI or Pd/Phosphine Catalysts
作者:Chang-An Wang、Chengwei Liu、Michal Szostak
DOI:10.1021/acs.oprd.0c00054
日期:2020.6.19
N-Acyl-hydantoins have emerged as novel acyl-transfer reagents for the synthesis of ketones via selective N–C(O) cleavage. Herein, we report two new protocols for the cross-coupling of N-acyl-5,5-dimethylhydantoins using versatile and readily accessible Pd–PEPPSI or Pd/phosphine catalysts. The acyl Suzuki reactions afford biaryl ketones in good to excellent yields under operationally simple conditions using commercially
N-酰基乙内酰脲已成为通过选择性N-C(O)裂解合成酮的新型酰基转移试剂。在本文中,我们报告了使用多功能且易于获得的Pd-PEPPSI或Pd /膦催化剂对N-酰基-5,5-二甲基乙内酰脲进行交叉偶联的两种新方法。酰基铃木反应使用操作简便的条件下,使用市售的台式和空气稳定的扭曲N-酰基乙内酰脲作为酰基供体,可在操作简单的条件下以良好的收率获得优良的联芳基酮。该方法补充和扩展了先前有关N-酰基乙内酰脲(罗Z. 单位 流程解析。开发人员 2018, 22,1188)。